In product development, after brainstorming (or ideating if you prefer) the next step is usually prototyping and concept selection. Picking up on my last post, once you have used the business model canvas to generate a few ideas about how you might leverage resources from the current business to launch a new one, how do you pick which design to go with? How do you prototype a business model? I’m pretty sure a 3-D printer won’t work for that.